The goal of the study is to assess the impact of a health intervention, involving both diet and exercise modification, on outcomes following radical prostatectomy for the treatment of clinically localized prostate cancer. The specific urological outcomes expected to be improved are accelerated and/or improved recovery of erectile function (EF), as well as urinary continence, both very commonly affected by this surgery. Furthermore, as demonstrated by changes in responses to various questionnaires, an improvement in overall health-related quality of life is expected. Finally, an improvement in patients participating in the intervention groups in physical parameters, including body mass index (BMI), blood pressure (BP), and metabolic parameters, including serum glucose and cholesterol levels, is expected.